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package javax.transaction;

/**
 * The Status interface defines static variables used for transaction 
 * status codes.
 */

public interface Status {
    /**
     * A transaction is associated with the target object and it is in the
     * active state. An implementation returns this status after a
     * transaction has been started and prior to a Coordinator issuing
     * any prepares, unless the transaction has been marked for rollback.
     */  
    public final static int STATUS_ACTIVE = 0;

    /**
     * A transaction is associated with the target object and it has been
     * marked for rollback, perhaps as a result of a setRollbackOnly operation.
     */  
    public final static int STATUS_MARKED_ROLLBACK = 1;

    /**
     * A transaction is associated with the target object and it has been
     * prepared. That is, all subordinates have agreed to commit. The
     * target object may be waiting for instructions from a superior as to how
     * to proceed.
     */  
    public final static int STATUS_PREPARED = 2;
 
    /**
     * A transaction is associated with the target object and it has been
     * committed. It is likely that heuristics exist; otherwise, the
     * transaction would have been destroyed and NoTransaction returned.
     */  
    public final static int STATUS_COMMITTED = 3;

    /**
     * A transaction is associated with the target object and the outcome
     * has been determined to be rollback. It is likely that heuristics exist;
     * otherwise, the transaction would have been destroyed and NoTransaction
     * returned.
     */  
    public final static int STATUS_ROLLEDBACK = 4;

    /**
     * A transaction is associated with the target object but its
     * current status cannot be determined. This is a transient condition
     * and a subsequent invocation will ultimately return a different status.
     */  
    public final static int STATUS_UNKNOWN = 5;

    /**
     * No transaction is currently associated with the target object. This
     * will occur after a transaction has completed.
     */  
    public final static int STATUS_NO_TRANSACTION = 6;

    /**
     * A transaction is associated with the target object and it is in the
     * process of preparing. An implementation returns this status if it
     * has started preparing, but has not yet completed the process. The
     * likely reason for this is that the implementation is probably
     * waiting for responses to prepare from one or more
     * Resources.
     */  
    public final static int STATUS_PREPARING = 7;

    /**
     * A transaction is associated with the target object and it is in the
     * process of committing. An implementation returns this status if it
     * has decided to commit but has not yet completed the committing process. 
     * This occurs because the implementation is probably waiting for 
     * responses from one or more Resources.
     */  
    public final static int STATUS_COMMITTING = 8;

    /**
     * A transaction is associated with the target object and it is in the
     * process of rolling back. An implementation returns this status if
     * it has decided to rollback but has not yet completed the process.
     * The implementation is probably waiting for responses from one or more
     * Resources.
     */  
    public final static int STATUS_ROLLING_BACK = 9;
}